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Ion precipitation separating agent for flue gas desulphurization solution and use method thereof

A technology for precipitation separation and desulfurization solution, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of precipitation separation ion grabbing, low separation and removal efficiency, and inability to efficiently restore the normal desulfurization absorption efficiency of desulfurization liquid. , to achieve the effect of efficient removal and high separation efficiency

Inactive Publication Date: 2013-11-27
PANZHIHUA IRON AND STEEL +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by mineral sources or equipment corrosion, etc., when the concentration of lead, cadmium, cobalt, chromium, calcium and other elements is high, the separation and removal efficiency is low because it is not easy to form hydroxide precipitation. In addition, alkaline media such as silicon and aluminum are soluble or amphoteric. The removal efficiency of elements is also low
Especially when the organic components that play a role in desulfurization in the desulfurization solution react with ions to form soluble or poorly soluble chelates that are more stable than the corresponding metal hydroxide precipitation, the use of sodium hydroxide cannot efficiently precipitate and separate ions and cannot The ions are forcibly snatched from the chelate that was originally combined with the organic components of the desulfurization liquid, and the effective components of the desulfurization agent cannot be effectively dissociated and released, so that the normal desulfurization absorption performance of the desulfurization liquid cannot be efficiently restored

Method used

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  • Ion precipitation separating agent for flue gas desulphurization solution and use method thereof

Examples

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Effect test

example 1

[0020] The ion precipitation separation agent is formed by adding 0.07 kg of sodium diethyldithiocarbamate (copper reagent) to 1 kg of sodium hydroxide and mixing. And, add 50 kilograms of above-mentioned ion precipitating separating agent to every ton of desulfurization solution.

example 2

[0022] The ion precipitation separation agent is formed by adding 0.15 kg of sodium diethyldithiocarbamate (copper reagent) to 1 kg of sodium hydroxide. And, add 100 kilograms of the above-mentioned ion precipitating and separating agent to every ton of desulfurization solution.

example 3

[0024] The ion precipitation separation agent is formed by adding 0.11 kg of sodium diethyldithiocarbamate (copper reagent) to 1 kg of sodium hydroxide. And, add 75 kilograms of above-mentioned ion precipitating separating agent in every ton of desulfurization solution.

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Abstract

The invention discloses an ion precipitation separating agent for a flue gas desulphurization solution and a use method thereof. The ion precipitation separating agent comprises at least one of sodium hydroxide and potassium hydroxide, and diethyldithiocarbamic acid, wherein a weight ratio of at least one of sodium hydroxide and potassium hydroxide to diethyldithiocarbamic acid is in a range of (1: 0.07) to (1: 0.15).

Description

technical field [0001] The present invention relates to an ion precipitating and separating agent for flue gas desulfurization solution and its application method, more specifically, the present invention relates to an ion precipitating and separating agent for recovering flue gas desulfurization solution and its application method. Background technique [0002] In recent years, the environmental pollution caused by industrial development has attracted more and more attention. Especially, in metallurgy, power generation and other industries that need to burn fossil fuels, because sulfur dioxide will be produced in the process of burning fossil fuels, the discharge of these sulfur dioxides has caused many serious environmental problems such as acid rain. Therefore, various Technology for removing sulfur dioxide contained in flue gas (commonly referred to as flue gas desulfurization technology). [0003] In various flue gas desulfurization technologies, various desulfurizers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/50B01D53/96
Inventor 黎建明邱正秋成勇邹维嘉王建山叶运高
Owner PANZHIHUA IRON AND STEEL